accounts = client.get_sub_account_list()

history = client.get_sub_account_transfer_history(email='blah@gmail.com')

transfer = client.create_sub_account_transfer(
    fromEmail='from@gmail.com',
    toEmail='to@gmail.com',
    asset='BNB',
    amount='100'
)

assets = client.get_sub_account_assets(email='blah@gmail.com')